Travel Time Prediction on the Network Using Time Series
(Case study: zone 1 in Mashhad)M.JahangardM.Sc. Student, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, IranauthorM.A.PirayeshAssociate Professor, Industrial Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, IranauthorA.Mohammadzadeh MoqhaddamAssistant Professor, Civil Engineering Department, Faculty of
Engineering, Ferdowsi University of Mashhad, Mashhad, Iranauthortextarticle2016perIn urban service systems, the lack of travel time between two different destinations could be felt. The main factor in many systems, which are based on routing vehicles, is travel time estimation. If a driver had travel time information before the trip was set about, he could make a good decision about his alternative routes. So, it needs to estimate travel times for routes, before routes traversed. According to traffic conditions at intersections and routes of the urban center, several methods are employed to obtain travel time. But among them, the role of spatial data to define the travel time has better performance compared to other ones. This paper intends to predict future traffic volume by using traffic volume pattern which obtained in the past and then, estimate travel time in the arc and delay in intersection with travel time-volume and Webster functions. This report is done for streets of zone 1 Mashhad including three types of retractable and arterial Grade 1 and 2. The results of the paired T-Test, by using the mentioned method, show that travel time estimation is acceptable. Roadمرکز تحقیقات راه، مسکن و شهرسازی24

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2016209218http://road.bhrc.ac.ir/article_50951_dcda7047792e2079e1b834fcbe9bec91.pdfDetermination of the Visco-Elastic Properties of Asphaltic Mixtures for Finite Element Modeling In ABAQUSH.TaherkhaniAssistant Professor, Civil Engineering Department, University of Zanjan, Zanjan, IranauthorM.JalaliM.Sc., Graduate, Civil Engineering Department, University of Zanjan, Zanjan, Iranauthortextarticle2016perAsphaltic mixtures show viscoelastic behavior under most conditions in their service life in pavements. A finite element modeling is widely used for predicting the viscoelastic responses of asphaltic mixtures. The general purpose ABAQUS software is a commonly used for finite element modeling analysis of different structures, which has the capability for modeling and analysis of structures contains viscoelastic materials. A common method of simulating the viscoelastic behavior in ABAQUS is the use of Prony series. To use this method, the required parameters, including the Prony constants, instantaneous elastic modulus and Poison's ratio must need to be determined. Determination of this parameters using laboratory tests is time consuming and costly and needs sophisticated equipment. Therefore, in this research, it has been attempted to determine the parameters using theoretical models without conducting laboratory tests. To this end, using the Witczak model for prediction of dynamic modulus of asphaltic mixtures and extending the algorithm proposed by Schapery and Park, the parameters of the typical asphaltic concrete mixes in Iran have been determined. The parameters have been determined using the volumetric properties of the mixtures. The results of this research can be used for modeling the time-dependent viscoelastic behavior of asphaltic concrete mixtures in ABAQUS and determination of their responses at a reference temperature of 21.1 ºC. Roadمرکز تحقیقات راه، مسکن و شهرسازی24

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2016219236http://road.bhrc.ac.ir/article_50957_be8de629db36c99dd32fe3c829d53197.pdfExperimental Evaluation of Cold Recycled Asphalt
with Clay Bitumen EmulsionM.Kalantari SarcheshmeM.Sc. Student, Civil Engineering Department, Yazd University, Yazd, Iran.authorM. M.KhabiriAssociate Prof., Civil Engineering Department, Yazd University, Yazd, Iran.authorH.khani sanijAssistant Prof., Civil Engineering Department, Yazd University, Yazd, Iran.authortextarticle2016perResearches show that the modification of bitumen with clay can enhance functional properties of asphalt mixtures, such as its resistance to heat, stability and flow. To use this characteristic of clay in cold recycled asphalt we can use clay modified bitumen emulsions. In these research two different types of bentonite is used to emulsify bitumen. Clay modified bitumen emulsion samples were made in laboratory and the agitation was provided by a high speed mixer. After quality control tests conducted, cold recycled asphalt samples were made with obtained emulsions. These samples were evaluated through functional tests such as Marshal Stability test, Indirect Tensile Strength and resilient modules in dry and saturated conditions. The results show that despite of improvements in resistance and strength characteristics of cold recycled asphalt with clay modified bitumen emulsions, they show weak performance in moisture conditions. Roadمرکز تحقیقات راه، مسکن و شهرسازی24

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2016237250http://road.bhrc.ac.ir/article_50953_94db20c5db24659b743f815ded8fc432.pdfGIS Based Site Selection of Traffic Sensor Based on MCDM Methods
(TOPSIS, PROMETHEE and VIKOR)S.Rokhsari-TalemiM.Sc. Grad., Department of Surveying Engineering, Faculty of Engineering, University of Tehran, Tehran, Iran.authorM. R.Delavar, Associate professor, Center of Excellence in Geomatic Eng. in Disaster Management, Dept. Of Surveying and Geomatic Eng., College of Eng., University of Tehran, Tehran, Iran.authorA.Gh.Sadeghi-Niaraki, Assistant professor, Department of Geodesy and Geomatics Engineering K.N. Toosi University of Technology, Tehran, Iran.authorB.MoshiriProfessor, Center of Excellence in Control & Intelligent Processing, School of Electrical and Computer Eng., College of Eng., University of Tehran, Tehran, Iran.authortextarticle2016perSmart traffic monitoring is a new method of traffic data acquisition. Traffic sensors are the core of such system in consequence optimum allocation of them increases efficiency of monitoring and decrease cost of installation. Although multi criteria decision making (MDCM) idea is a common method for this purpose, the big challenges is selection of the best MCDM method. Thus this paper tries to discuss advantages and disadvantages of different MCDM methods to determine proper mythology for optimum allocation of traffic sensors. To do the analysis a pilot junction in north of Washington was selected. In next step multi criteria decision making concepts were studied to compare urban links rank a long selected junction, respecting final calculated weight based on AHP method .To do this step some multi criteria decision making method such as PROMETHEE and TOPSIS and VIKOR were compared for determination of optimum link for traffic sensor site selection. Roadمرکز تحقیقات راه، مسکن و شهرسازی24

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2016251264http://road.bhrc.ac.ir/article_50950_73c505883bf9e10002692ebfe257f94c.pdfQuantitative Evaluation of Interchanges Operation from Users Opinion
(Case Study: Urmia City, Modarres Interchange)Gh.AhmadiAssistant Professor in Department of Urban Planning, University of Urmia, Urmia, IranauthorR.KarimiM.Sc. Student, University of Urmia, Urmia, Iran.authortextarticle2016perIn urban roads when the improvement of one interchange is purposing, one of the offers for increasing the efficiency of intersections is building interchanges. This research have codified in parallel of following theories: 1) there is a meaningful relation between the desirable operation of left-turns in interchange and passerby and bikers safety. 2) It sounds that there is a meaningful relation between passerby and bikers safety and compatibility with the around skeletal environment. As for the relation of urban and users of urban is mutual, enjoy from citizens opinion can be useful in parallelism improvement of interchange efficiency. The question of this research is that: what relation is there between desirable operation of left-turns, passerby and bikers’ safety and compatibility with around skeletal environment .The aim of this research is evaluation of interchanges operation according to variables like passerby and bikers safety, left-turn operation and its compatibility with around skeletal environment. For arrive this goal, first the existent articles and books about this context read and surveyed. Then 40 questionnaires that its reliability confirmed according to Cronbach's alpha with amount of 0/752و alpha with amount of 0/752, distribute between users of interchange and for surveying the relation between variables use C Kendell Tau exam and Spearman coefficient. Getting results from two exams analysis show that there is meaningful relation between passerby and bikers safety, left-turn operation and also interchange compatibility with the around skeletal environment. Roadمرکز تحقیقات راه، مسکن و شهرسازی24

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2016265276http://road.bhrc.ac.ir/article_50952_f062062285f080520b1f9a797da19a31.pdfApplying Numerical Models to Simulate the Behavior of Rivers in the Vicinity of RoadAMahjoob, Assistant Professor, Transportation Research Institute, Road, Housing and Urban Development Research Center, Tehran, Iran.authorA. H.AbbasniaAssistant Professor, Civil Engineering Department, Pardis Branch, Islamic Azad University, Pardis, Iran.authorF.KilaneheiAssistant Professor, Department of Civil Engineering, Imam Khomeini International University, Qazvin, Iran.authortextarticle2016perConstruction, repair and maintenance of road and railroad infrastructures are very expensive. The exact knowledge of phenomena that damage the infrastructures, can help to manage the costs. One of the most important phenomena is flood. In recent decades, numerical modelings of occurred flood in the vicinity of roads and railways have been noted. In the present study, one and two-dimensional flow equations are presented and successful models in this field have been investigated. Among the presented models, two superior ones within one-dimensional and two-dimensional models are investigated more accurately and finally the proposed usages of these models are presented. One of the noticeable results is that one-dimensional models for overall analysis of a large area are very beneficial when dominant flow can be considered linearly. Although these models can calculate the effect of partial phenomena such as bridges and culverts, but if the details of these phenomenas are important for the project, it is suggested that the two-dimensional and three-dimensional softwares are used with higher capacity. Thus, using two-dimensional models such as CCHE2D, with ability of using different turbulence models and simulation the suspended load and bed load in non-equilibrium state, non-uniform and cohesion and non-cohesion sediments is appropriate. The use of introduced one and two-dimensional models for cases which are totally tree dimensional are not recommended. Roadمرکز تحقیقات راه، مسکن و شهرسازی24